Calculate the motor power required to drive a fan which maintains a draught of 45 mm of water under the following conditions, (a) Induced draught and (b) Forced draught. The temperature of the fuel gases leaving the boiler in each case is 200 degrees *C and the boiler house temperature is 33 degrees * C The air supplied is 18.5 kg per kg of the fuel. The mass of coal burnt per hour is 1820 kg. Assume a fan efficiency of 80% in both the cases. Comment on the result.

Calculate the motor power required to drive a fan which maintains a draught of 45 mm of water under the following conditions, (a) Induced draught and (b) Forced draught. The temperature of the fuel gases leaving the boiler in each case is 200 degrees C and the boiler house temperature is 33 degrees C The air supplied is 18.5 kg per kg of the fuel. The mass of coal burnt per hour is 1820 kg. Assume a fan efficiency of 80% in both the cases. Comment on the result.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.32P

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